An epidemic hiding in plain sight. An estimated 100000. Underage American girls and our nation's cities and suburbs victims of sex trafficking. Over the weekend ABC news was granted exclusive access inside the biggest ever nationwide crack down. And 72 hours 79 kids would taken off the streets over

A couple of weeks ago we reported on new clues that could someday lead to a cure for the common cold. We'll now researchers are reporting major progress in the fight against the flu. Which kills 36000 Americans every year as John McKenzie reports a promising new study could hold the key to